Spring 获取注入类中实现 某个 接口的类

@Controller
public class TestController {@Autowired
    private WebApplicationContext webApplicationContext;

    @RequestMapping("/index")public String index(){//根据接口类型返回相应的所有bean
        Map<String, TestInterface> map =webApplicationContext.getBeansOfType(TestInterface.class);
        return "/index";
    }
}